Air permit public notices

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According to the Air Quality Control Commission’s Regulation 3, some permits require public notice.

These permits can be:

  • Construction permits.
  • Operating permits. 
  • Other preconstruction permits. 

During a public notice period, we post the public notice, draft permit, and any calculations/analysis documents on this page and request written comments from the public.

If you would like to submit a public comment, please first review our Public Participation Guidance. If you have any questions, general comments, or would like to send us additional information, contact us at


1. Construction permits

Construction permits require public notice for reasons listed in Regulation 3 Part B, III.C. The most common reasons are:

  • New emission limits and/or limit increases in the draft permit trigger the requirement for public comment (25 tons per year in a nonattainment area or 50 tons per year in an attainment area).
  • The source could possibly emit odor above the limits found in the Air Quality Control Commission Regulation 2.
  • The source emits hazardous air pollutants at a level that requires them to follow the National Emissions Standards for Hazardous Air Pollutants (NESHAPS).
  • The source is requesting a federally enforceable limit on potential emissions in order to keep yearly emissions low enough to not trigger other regulatory requirements.
  • The division decides that public comment is warranted. This decision may be based on the length of time of the operation, its location, the type and projected amount of emissions, likelihood of public concern, or other relevant factors.

If all emission standards and ambient air quality standards are met, we will grant an Initial Approval permit. The Initial Approval permit allows the source to construct and start operation. The source must start construction within 18 months from the date of issuance or the permit can automatically expire.


2. Operating permits

Draft operating permits are published on our website and comments are requested for the following permit types:

  • Significant modifications
  • Initial permits
  • Renewal permits and reopenings


3. Other preconstruction permits

All preconstruction permits that include Prevention of Significant Deterioration (PSD) and/or Nonattainment New Source Review Requirements (NANSR) are published on the division’s website and comments from the public are requested.



You may also send comments to
Asphalt Specialties Co., Inc. Weld County
Public notice period: Sept. 7 - Oct. 7, 2017 
Black Hills/Colorado Electric Utility Company, LP – Pueblo AIP Station – Pueblo County
Public notice period: Sept. 7 - Oct. 7, 2017 
Noble Energy, Inc. – Butterball T3N-R64W-S19 L01 – Weld County
Public notice period: Aug. 17 - Sept. 16, 2017
Noble Energy Inc – SANDAU T4N-R66W-S25 L01 – Weld County
Public notice period: Sept. 14 - Oct. 14, 2017 
Public Service Company of Colorado – Greasewood Compressor Station – Rio Blanco County
Public notice period: Sept. 7 - Oct. 7, 2017 
Suncor Energy (U.S.A.), Inc. – Commerce City Refinery – Plants 1 and 3 – Adams County
A public hearing has been set for this application: 
Wednesday, Aug. 2, 2017 at 7 p.m. 
Commerce City Civic Center- City Council Chambers 
7887 East 60th Ave.
Commerce City, CO 80022
We are no longer accepting public comment on this permit. These materials will remain available on this website while we review the public comments that we received. More information about the public comment hearing can be found on the Air Quality Control Commission's website
Tri-State Generation and Transmission Assn., Inc. – Rifle Generating Station – Garfield County
Public notice period: Sept. 14 - Oct. 14, 2017
Verdad Resources LLC – Johnson 8-30N – Weld County
Public notice period: Sept. 14 - Oct. 14, 2017 
Verdad Resources LLC – State 16-1H – Weld County
Public notice period: Aug. 31 - Sept. 30, 2017